Resistance of a metal wire of length 1 m is 26 ohm at 20degree C. if the diameter of the wire is 0.3mm what will be the resistivity of the metal at that temperature? [Please explain how A=π(d/2)^2]
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it is given that the resistance =26ohm
length=1cm
diameter=0.3mm=0.3\10
radius=3/200
area=3.14*3/200*3/200=0.0007065cm sq
by applying the formula
26=p 1/0.0007065
P=0.184
length=1cm
diameter=0.3mm=0.3\10
radius=3/200
area=3.14*3/200*3/200=0.0007065cm sq
by applying the formula
26=p 1/0.0007065
P=0.184
avanjas:
The answer is 1.84 × 10^-6 ohm metre and there are a lot of errors in the answer
Bhai you have to solve from last 2 equbtion
And you will get the right ans
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